Well.. I just read about the driver upgrade for the cs/pc line. I like what I hear. I considered posting this privately to SVS but thought others may have the same question. Here's my dilemma: My current 20-39cs/s700 is terrific. However, I recently had another 20-39cs in my HT for a half day and absolutely loved it! I really want another 20-39cs.. baaaaadly. But for various reasons I won't bore you with, adding a 2nd CS won't pass WAF right now. Well, as I said, I've heard dual CS's and compared that to my single CS. Absolutely killer! What I'd like to know is, will the driver upgrade move me significantly in that direction? Or is there just no way to replace the effect that a dual setup provides? IE, how can I qualify my expectation of the upgraded driver? Reading some of the CS+ threads, I believe part of the problem some folks experienced was unrealistic expectations when moving from a CS to a +. (a + being likened to dual cs's, for instance). Also, for those of us with a parametric eq in the line, will the driver upgrade require new baseline measurements and filter settings? Thanks Tom and Ron for such outstanding products, service and support!